RN4870-I/RM140. Microchip Antenna (Other) In Stock
The RN4870-I/RM140. is a Bluetooth 5.0 BLE module from Microchip operating in the 2.402–2.480 GHz ISM band up to 85°C. It delivers a fully integrated radio with on-board antenna for rapid wireless connectivity development. Available worldwide with in-stock inventory and fast shipping.
- Manufacturer
- Microchip
- Package
- Other
- Pin Count
- 33
- Lifecycle
- ACTIVE
- Datasheet
- RN4870-I/RM140. Datasheet PDF
- Category
- Antenna
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Bluetooth 5.0 compliant radio covering the full 2.402–2.480 GHz ISM band for broad interoperability
- Integrated antenna and certified RF front-end eliminates external matching network design
- Operating temperature up to 85°C supports industrial and commercial IoT deployment environments
Applications
The RN4870-I/RM140. is targeted at IoT sensor nodes, wearable health monitors, and industrial wireless data loggers that need a certified Bluetooth 5.0 link without investing in custom RF design. Its integrated antenna and module form factor let engineers add BLE connectivity to a host MCU via a simple UART or SPI interface, accelerating time-to-market for smart building, asset-tracking, and remote-monitoring products.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for RN4870-I/RM140.:
Bluetooth Low Energy Module, Unshielded, No Antenna, ASCII Interface, 12x15mm
Frequently Asked Questions
What Bluetooth version and frequency band does the RN4870-I/RM140. support?
The module is fully compliant with Bluetooth 5.0 and operates across the 2.402–2.480 GHz ISM band. This version adds features such as 2 Mbit/s PHY, Long Range coded PHY, and extended advertising compared to earlier BLE generations, supporting a wider set of sensor and wearable applications.
Up to what ambient temperature can the RN4870-I/RM140. operate reliably in a sealed enclosure?
The module is rated for operation up to 85°C ambient temperature, which comfortably covers commercial and light industrial enclosures. This range is sufficient for IoT gateways mounted in equipment rooms, outdoor asset trackers with moderate heat exposure, and industrial sensor nodes placed near heat sources.
How does the integrated antenna in this module simplify PCB layout compared to a bare BLE chip?
Because the RN4870-I/RM140. integrates the antenna and RF matching network within the module, designers avoid the demanding task of RF trace routing and impedance matching that a discrete BLE SoC requires. Clearance of approximately 5mm around the antenna keep-out zone is still recommended, but the module handles all RF filtering and LNA biasing internally, reducing BOM count by roughly 10–15 passive components.
Which host interface does the RN4870 use for command and data exchange with a host microcontroller?
The RN4870 communicates via a UART interface with an ASCII command protocol, operating typically at 115200 baud. This makes integration straightforward on any host MCU that exposes a free UART peripheral, eliminating the need for SPI or I2C drivers and allowing rapid prototyping with development kits running at 3.3V logic levels.
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